go-blocks/middleware/middleware.go

78 lines
2.1 KiB
Go

package middleware
import (
"context"
"gopher-toolbox/token"
"log/slog"
"net/http"
"strings"
"github.com/gin-gonic/gin"
"github.com/google/uuid"
)
func AuthMiddleware(token *token.Paseto) gin.HandlerFunc {
return func(c *gin.Context) {
authorizationHeader := c.GetHeader("Authorization")
if len(authorizationHeader) == 0 {
slog.Error("authorization header is required")
c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "authorization_header_required"})
return
}
fields := strings.Fields(authorizationHeader)
if len(fields) != 2 || fields[0] != "Bearer" {
slog.Error("invalid authorization header")
c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "invalid_authorization_header"})
return
}
accessToken := fields[1]
payload, err := token.Verify(accessToken)
if err != nil {
slog.Error("error verifying token", "error", err.Error())
c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "invalid_signature"})
return
}
c.Set("payload", payload)
c.Next()
}
}
func PermissionMiddleware(requiredPermissions ...string) gin.HandlerFunc {
return func(c *gin.Context) {
// payloadInterface, exists := c.Get("payload")
// if !exists {
// c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "authentication required"})
// return
// }
// payload, ok := payloadInterface.(*token.Payload)
// if !ok {
// c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{"error": "invalid payload type"})
// return
// }
// for _, requiredPermission := range requiredPermissions {
// hasPermission, exists := payload.User.Permissions[requiredPermission]
// if !exists || !hasPermission {
// c.AbortWithStatusJSON(http.StatusForbidden, gin.H{"error": fmt.Sprintf("Permission '%s' required", requiredPermission)})
// return
// }
// }
c.Next()
}
}
func RequestIDMiddleware() gin.HandlerFunc {
return func(c *gin.Context) {
requestID := uuid.New().String()
ctx := context.WithValue(c.Request.Context(), "request_id", requestID)
c.Request = c.Request.WithContext(ctx)
c.Writer.Header().Set("X-Request-ID", requestID)
c.Next()
}
}